【英文标准名称】:Waterquality-Determinationofsuspendedsolidsbyfiltrationthroughglass-fibrefilters
【原文标准名称】:水质玻璃纤维过滤器过滤法测定悬浮物
【标准号】:ISO11923-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:废水;含量测定;水质;污水;颗粒空气污染物;定义;水质试验;滤波;未经处理的水;固体
【英文主题词】:Definitions;Determinationofcontent;Effluents(sewage);Filtering;Particulateairpollutants;Sewage;Solids;Untreatedwater;Waterquality;Watertesting
【摘要】:Describesamethodforthedeterminationofsuspendedsolidsinrawwatersandwastewatersbyfiltrationthoughglass-fibrefilters.Thelowerlimitofthedeterminationisapproximately2mg/l.Floatingoilandotherimmiscibleorganicliquidsinterfere.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_60
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:Safetylevelswithrespecttohumanexposuretoelectromagneticfields,0-3kHz
【原文标准名称】:关于人类暴露于0～3kHz电磁场的安全等级
【标准号】:IEEEC95.6-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002-01-01
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;电气工程;电磁场;人类工效学;高频测量;辐射防护;射频;安全措施
【英文主题词】:Definition;Definitions;Electricalengineering;Electromagneticfields;Ergonomics;High-frequencymeasurement;Radiationprotection;Radiofrequencies;Safetymeasures
【摘要】:In1960,theAmericanStandardsAssociationapprovedtheinitiationoftheRadiationHazardsStandardsprojectundertheco-sponsorshipoftheDepartmentoftheNavyandtheInstituteofElectricalandElectronicsEngineers.Priorto1988,C95standardsweredevelopedbyaccreditedstandardscommitteeC95andsubmittedtotheAmericanNationalStandardsInstitute(ANSI)forapprovalandissuanceasANSIC95standards.Between1988and1990,thecommitteewasconvertedtoStandardsCoordinatingCommittee28undersponsorshipoftheIEEEStandardsBoard,andin2001,becamealsoknownastheInternationalCommitteeonElectromagneticSafety(ICES).InaccordancewithpoliciesoftheIEEE,C95standardswillbeissuedanddevelopedasIEEEstandards,aswellasbeingsubmittedtoANSIforrecognition.ThepresentscopeofICESis:Developmentofstandardsforthesafeuseofelectromagneticenergyintherangeof0Hz?00GHzrelativetothepotentialhazardsduetoexposureofsuchenergytoman,volatilematerials,andexplosivedevices.ThecommitteewillcoordinatewithothercommitteeswhosescopesarecontiguouswithICES.?/p>ICESisresponsibleforthisstandard.Therearefivesubcommitteesconcernedwith:Techniques,Procedures,Instrumentation,andComputation,IITerminology,UnitsofMeasurements,andHazardCommunication,IIISafetyLevelswithRespecttoHumanExposure,0?kHz,IVSafetyLevelswithRespecttoHumanExposure,3kHz?00GHz,VSafetyLevelswithRespecttoElectro-ExplosiveDevices,Twostandards,twoguides,andthreerecommendedpracticeshavebeenissued.Currentversionsare:IEEEStdC95.1?1999Edition,IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequencyElectromagneticFields,3kHz?00GHz(ReplacesIEEEStdC95.1-1991).IEEEStdC95.2?1999,IEEEStandardforRadioFrequencyEnergyandCurrentFlowSymbols(ReplacesANSIC95.2).IEEEStdC95.3?1991(Reaff1997),IEEERecommendedPracticefortheMeasurementofPotentiallyHazardousElectromagneticFields?RFandMicrowave(ReplacesANSIC95.3-1973andANSIC95.1-1981).ANSIC95.5-1981,AmericanNationalStandardRecommendedPracticefortheMeasurementofHazardousElectromagneticFieldsRFandMicrowave.IEEEStd1460?1996,IEEEGuidefortheMeasurementofQuasi-StaticMagneticandElectricFields.ANSIC95.4-1978,AmericanNationalStandardSafetyGuideforthePreventionofRadio-FrequencyRadiationHazardsintheUseofElectricBlastingCaps.ThisstandardwasdevelopedbyanICESSubcommittee3(SC3)formedin1991toaddressthefrequencyrangefrom0?kHz(SC3).Intheearlyyears,thesubcommitteediscussedthesciencerelatingtobothlong-termandshort-termexposuresandconcludedthattheeffectsoflong-term(chronic)exposurewerenotconvincinglyestablishedaswereeffectsofshort-termexposures.Thisstandarddefinesexposurelevelstoprotectagainstadverseeffectsinhumansfromexposuretoelectricandmagneticfieldsatfrequenciesfrom0?kHz.Thisstandardwasdevelopedwithrespecttoestablishedmechanismsofbiologicaleffectsinhumansfromelectricandmagneticfieldexposures.Itdoesnotapplytoexposuresencounteredduringmedicalprocedures.Thedefinedexposurelimitsdonotnecessarilyprotectagainstinterferenceofmedicaldevicesorproblemsinvolvingmetallicimplants(see6.12).
【中国标准分类号】:L06
【国际标准分类号】:13_280
【页数】:50P.;A4
【正文语种】:英语